Ipomoea habeliana Oliv.

Wood, John R. I., Munoz-Rodriguez, Pablo, Williams, Bethany R. M. & Scotland, Robert W., 2020, A foundation monograph of Ipomoea (Convolvulaceae) in the New World, PhytoKeys 143, pp. 1-823 : 1

390. Ipomoea habeliana Oliv. , Icon. Pl. 11: 80, t. 1099. 1871. (Oliver 1871: 80)

Type.

ECUADOR. Galapagos Islands, Hood [ Española] Island, Habel s.n. (holotype K000612879).

Description.

Scrambling liana with white latex, to c. 8 m in height; stems stout, woody, glabrous. Leaves characteristically held erect, petiolate, 6-15 × 1.8-3.5 cm, lanceolate to ovate-lanceolate, acute and long-mucronate, base broadly cuneate, both surfaces glabrous, abaxially reticulate; petioles 2.2-6.5 cm. Inflorescence of 1-several flowers in axillary compound cymes, peduncles 1-6 cm, stout, occasionally with reflexed spinules; bracteoles not seen; pedicels 8-22 mm long, thickened upwards; sepals unequal, glabrous, outer 1.2-2 × 0.7-0.8 cm, ovate, obtuse, mucronulate, inner 1.6-2.3 cm, oblong-ovate, truncate, margins scarious; corolla opening at night, glabrous, tube cylindrical, 7-9 cm long, c. 0.7 cm wide, greenish, limb 4 cm-6 cm, white, undulate. Capsules 2.2 × 1.4 cm, ellipsoid, beaked, glabrous; seeds 11 × 7 mm, densely pilose on the margin with brownish hairs c. 5 mm long.

Illustration.

Figures 8E , 192 .

Distribution.

Endemic to the Galapagos Islands.

ECUADOR. Galapagos Islands: Santa Cruz Island, H.J.F. Schimpf 67 (BM, MO); P.S. Bentley 203 (K, MO); T.W.J. Taylor 90 (K).

Note.

Its nearest relative appears to be Ipomoea violacea , rather than any American species. It is probably pollinated by moths as the white flowers open in the evening.

Figures

Figure 8. Corollas showing variations in form (side view), size, limb lobing and stamen exsertion. A Ipomoea argentea B I. repanda C I. neei D I. electrina E I. habeliana F I. santillanii G I. nationis H I. rubriflora J I. longistaminea K I. megapotamica L I. megalantha M I. neriifolia N I. syringifolia P I. ramosissima Q I. elongata R I. mucronatoproducta. A from Wood et al. 25639 and photo; B from Whitefoord 5244; C from Skutch 2043; D from Breedlove 27626; E from Bentley 203; F from Bourgeau 3024; G from Saunders 987; H from Wood et al. 27678; J from Pastore et al. 2678; K from Wood et al. 28060; L from Hassler 9114; M from Rezende et al. 1011; N from Stutz 1426 and photo; P from Bang 2246; Q from Purpus 3904; R from Wood & Villarroel 25474. Drawn by Rosemary Wise.

Figure 192. Ipomoea habeliana. A habit B corolla limb and anthers C capsule D seed. Drawn by Rosemary Wise A, B from Bentley 203; C, D from sin. data ex Herb. Hooker.